Band-saw meat cutter construction



June 28, 1932. c. G. BlRO 1,864,517

BAND SAW MEAT CUTTER CONSTRUCTION Original Eiled April 25, 1929 2Sheets-Sheet l v 13 6 I l I 5 ll H 47 A I o 1 I F 1 I V L$9\16 21o z f 2c%; Z6

Qwuemtoo fi i GwzZfi/zka June 28, 1932. BIRO 1,864,517

BAND SAW MEAT CUTTER CONSTRUCTION Original Filed April 25, 1929 2Sheets-Sheet 2 gwuentnt L Cd/CZ 75260 Patented June 28, 1932 UNITEDSTATES j PATENT o ce CARL G. B130, 013 MARBLEHEAD, OHIO" BAND-SAW MEATCUTTER CONSTRUCTION Original application filed April 25, 1929, SerialNo. 357,917, new Patent No. 1,793,461,;1ater1 February 2 1931, and inCanada July 11, 1930. Divided and this application filed January 23,1931.

This application is a division of my application Serial No. 357,917,filed on April 25, 1929, for a meat cutter, on which Letters Patent No.1,793,461 were granted on February 24, 1931.

My invention has for its object to provide a band saw meat cuttingmachine wherein the band saw may be subjected to a predetermined tensionand this tension maintained. In the preferred form of construction, themachine is formed of two frame parts, and means is provided foradjusting one of the frame parts relative to the other in a direc tionto separate the pulleys on which the band saw is located and securingthe frames in their relative positions when the band saw has beensubjected to the desired tension. Preferably, a spring of substantiallyknown resistance to deformation is provided and the tenion of the bandsaw is determined by the extent of deformation of the spring enablingexact adjustment. The frames are then secured in their relativepositions which enables uniform operation of machines embodying theinvention, either when first installed or when the band saws aresubstituted or repaired.

The invention may be contained in meat cutters that vary in theirdetails of construction and, to illustrate a practical application ofthe invention, I have selected a meat cutter having the band-sawcooperative features as an example of the various embodiments of myinvention, and shall describe the meat cutters hereinafter. Theparticular meat cutter selected for purposes of illustration is shown inthe accompanying drawings.

Fig. 1 is a side View of the machine selected as an example of theembodiment of my invention. Fig. 2 is a top view of the table of theband saw cutting machine illustrated in Fig. 1. Fig. 3 is an end view ofa part of the machine and illustrates the frame adjusting and sawtension mechanism.

In the form of construction shown in the drawings, the meat cutter issupported on a frame 1. It is driven by a suitable motor operatingthrough the driving wheel 2. A second frame 3 is adjustably connected tothe frame 1 by means of the clamping mem- Serial ber 4 and the bolts 5.The band-saw 6 passes over the pulleys 7 and 8, one rotatively supportedon shaft 16 in the frame 1 by means of the ball bearings 9 and the othersupported I on the frame 3 by means of the shaft 10.

The frame 3 comprises a standard 13 and a housing 14.1 The standard 13extends along one side of the frame 1 upward to support the housing 14in which is located the pulley wheel 8. It is provided with a pair ofguide parts 15 movable within the clamping member 4 which, with the endof the frame 1, forms a way for guiding theframe 3 in its adjusted.movements relative to the frame 1. overhangs the frame 1 to The housing14 I locate parts of the band saw in substantially a vertical position.The frame 3 is adjustably located with respect to the frame 1 by meansof the screw 20 which is threaded into the lower end 21 of the clampingmember. A spring 22 is located intermediate the end of the screw 20 anda boss 23 formed on the lower end of the frame 3. To adjust the frame 3relative to the frame 1, andconse- I quently the band saw 6, theclamping memher 4 is loosened by giving a reverse turn to the screws 5to release'the clamping member 4 relative to the frame 1 in order topermit the frame 3 to slide with respect to the frame 1 and yet maintainthe frame 3 in position with respect to the frame 1. The screw 20 isthen turned by means of the handle'25 that is connected to the lower endof the.

screw 20. The screw 20 is rotated untilthe spring 22 is subjected to thedesired compression as determined by the distance between the coils orturns of the spring which may be suitably callipered for exactness as bythe insertion of a suitable toolof known dimensions and determining thedistance between the turns of the spring22.

The spring 22 has a substantially lmown elastic coefiicient andresistance to deformation and, consequently,

as may be determined by the callipering of the spaces between the turnsof'the spring. Thus, in assembling machines embodying the invention,substantially uniform conditions, with respect to the tension of theband saw,

the band saw may be adjusted to a substantlally accurate tension IC 'Jmay be produced in the machines. Also, When the band saws aresubstituted or repaired, reinstalled or inserted in the machine, theymay be subjected to the same tension.

5 This produces a uniform cutting operation of the. meat and preventsoperation of the machine either when the band'saw is too'loose or tootight and its tension is readily'detenmined and set at itsinstallationand'main 1 tained at that tension throughout the operationof the band saw installed.

When the desired tension of the band saw "lias be'en' produced by therotation of the screw 20; the'frame 3 lS'SeCHIediII'POSltlOII" relativeto the frame 1 by means of the bolts ,5that; clamp the frame 3againstthe'end of the frame 11w prevent anyreturn movement of the frame 3byreason of the tension of the band saw and to preventthe. variation inthe adjustment by the operation of the screw 20. This insures aconstantcutting operation ofthe;machine, the bandsaw being maintainedfata constant tension by reasonof the frame 3 being securely clamped to theframe 1.

' I claim:

1. I'nea'meat cutter, a frame, a saw band, aipulley wheelrotatablysupported on the frame. for, operating the saw band, a second 80framevertically slidable with respectvto. the

first named frame and havingia pulleywheel for guiding thesaw band, ascrew, the, first named. frame-having, a nut for receiving. the screw,vauspring located. intermediate, the 'end ofithe screw aaid the.lowerend of thesecond namedgframe for adjusting thetension of the saw. band,means: for. clampingjthe said framesztogethen 2. In armeat cutter, aframe,ia band saw,

40 a. pulley wheel rotatably supported on the frame-for operatingtherbandjsaw, a second frame. vertically slidable Withrespect to thefi'rst'in amed. frame andhav-inga pulley wheel for guiding thebandlsaw,ia clamping membergfor'engaging thesecond named frame,

3;:SC I6 W- threaded through the lower end of the, clamping member, l aspring located intermediate the end of thescrew. andsthe' lower endof-the secondnamed frame for adjust 59 ing the tensionof the band saw,and boltsfor clamping the clamping: member against the second namedframe. and clamping the sec; ond;.namedframe to the firstnamed frame. lnwitness whereof I have hereunto. signed mynameto.this;specification.

CARL. G. BIRO.

